Associated Spring Raymond 103-405 Die Spring Blue

Product Description

The ASSOCIATED SPRING RAYMOND 103-405 is a medium-duty die spring designed for use in stamping dies, punch presses, and related tooling applications. It features a trapezoidal wire profile wound from chromium alloy steel, which delivers a higher load capacity per unit of length compared to round-wire springs. The spring accepts a 0.75-inch hole diameter and a 0.375-inch rod diameter, with a free length of 1.25 inches. At full compression, it handles a maximum deflection load of 160 pounds across a maximum deflection of 0.63 inches, giving a rated spring rate of 256 pounds per inch. The blue color coding indicates medium-duty classification per standard die spring conventions.

This spring is suited for light-to-medium force requirements in metal stamping, die forming, and precision tooling setups found in manufacturing and fabrication environments. It is installed by tool and die makers, machine maintenance technicians, and industrial MRO professionals. The compact 1.25-inch free length makes it appropriate for applications where space in the die set is limited and a controlled, repeatable spring force is required.

Key Features

• Trapezoidal wire cross-section for higher load density versus round-wire die springs
• Chromium alloy steel construction for durability under cyclic compression loads
• 160-pound maximum deflection load with 0.63-inch maximum deflection
• Spring rate of 256 pounds per inch for predictable, linear force output
• Blue color coding identifies medium-duty rating at a glance
• Manufactured under ISO 9001:2008 and ISO/TS 16949:2009 certified quality systems

Compatibility

Designed as an OEM-style replacement or direct-fit die spring for medium-duty stamping die sets requiring a 0.75-inch hole diameter, 0.375-inch rod diameter, and 1.25-inch free length in standard die spring bores.

Installation Notes

Die spring replacement and die set servicing should be performed by qualified tool and die technicians with the press fully de-energized, ram locked out, and all stored energy released per OSHA lockout/tagout procedures. Inspect the spring seat, guide rod, and bore for wear or damage before installing a replacement spring. Do not exceed the rated maximum deflection of 0.63 inches during operation, as over-compression accelerates fatigue failure.